Categories > Current Electricity > Different Measuring Instruments > The figure shows a circuit diagram of a ‘Wheatstone Bridge’ to measure the resistance G of the galvanometer. The relation $\frac{P}{Q} = \frac{R}{G}$ will be satisfied only when

Current Electricity

Question: The figure shows a circuit diagram of a ‘Wheatstone Bridge’ to measure the resistance G of the galvanometer. The relation $\frac{P}{Q} = \frac{R}{G}$ will be satisfied only when

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1) The galvanometer shows a deflection when switch S is closed
2) The galvanometer shows a deflection when switch S is open
3) The galvanometer shows no change in deflection whether S is open or closed
4) The galvanometer shows no deflection
Solution: Explanation: No Explanation
Different Measuring Instruments Potentiometer Meter Bridge

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